Zithini iziphumo ze-sunscreen kwaye ungayisebenzisa njani ngokuchanekileyo? Ungayikhetha njani i-sunscreen ekufaneleyo?

Ulwahlulo lwe-sunscreen

I-sunscreen ibhekisa kwizithambiso ezongezwe ngee-agents ze-sunscreen ezinokuthintela okanye zifunxe imisebe ye-ultraviolet ukuthintela ukutsha kolusu nokutshiswa lilanga. Ngokomgaqo wokukhusela ilanga, i-sunscreen inokwahlulwa ibe yi-sunscreen ebonakalayo kunye ne-sunscreen yamakhemikhali.

I-sunscreen ebonakalayo

I-sunscreen ebonakalayo, njengoko igama lisitsho, isebenzisa imigaqo yefiziksi. Amasuntswana e-athomu ale sunscreen anemilo efana ne-flake. Xa esasazwa ebusweni, asebenza njengesipili, ebonakalisa ukukhanya kwelanga ukufezekisa injongo yokukhusela ilanga. I-Titanium dioxide kunye ne-zinc oxide zombini zizithako ze-sunscreen ebonakalayo. Zinokwenza ifilimu ekhuselayo eluswini ukuze imisebe ye-ultraviolet ingangeni kumphezulu wesikhumba. Zombini zinokubonelela ngokhuseleko olupheleleyo lwe-UVB, phakathi kwazo i-zinc oxide inokuthintela i-UVA ngcono. Izithako ze-sunscreen eziqhelekileyo zimhlophe kwaye zi-pasty, kwaye zijika zibe luhlaza okwesibhakabhaka xa zichatshazelwa ngamanzi. Nangona kunjalo, olu hlobo lwemveliso lukwanemida ethile: kubantu abanesikhumba esimnyama, isiphumo sokupholisha sisenokungabi sendalo; kubantu abanesikhumba esomileyo, asifumisi ngokwaneleyo; asifanelekanga kwi-sunscreen yomzimba wonke; iimveliso zokususa izimonyo kufuneka zisetyenziswe ukunceda ukuyisusa icocekile, njl.

i-sunscreen yekhemikhali

I-sunscreen yekhemikhali kukusebenzisa izithako zekhemikhali ukukhusela elangeni. Olu hlobo lwe-sunscreen lusebenzisa umgaqo wokufunxa ukukhusela elangeni. Yinto edlulisela ukukhanya enokufunxa imisebe ye-ultraviolet kwaye iyiguqule ibe ngamandla okungcangcazela kweemolekyuli okanye amandla obushushu ukuze kufezekiswe isiphumo sokukhuselwa lilanga, njengee-amino acids. I-Benzoic acid kunye nezinto eziphuma kuyo, i-cinnamic acid, njl. Xa isetyenziswa ebusweni, ii-athomu zifunxa ukukhanya kwelanga ukuze zithintele ukuba kungafikeleli eluswini. Ngokwethiyori, i-sunscreen yomzimba ingcono kune-sunscreen yekhemikhali, kodwa okwangoku uninzi lwazo ezithengiswayo zii-sunscreen zekhemikhali.

Ulwahlulo lwe-sunscreen

I-sunscreen ibhekisa kwizithambiso ezongezwe ngee-agents ze-sunscreen ezinokuthintela okanye zifunxe imisebe ye-ultraviolet ukuthintela ukutsha kolusu nokutshiswa lilanga. Ngokomgaqo wokukhusela ilanga, i-sunscreen inokwahlulwa ibe yi-sunscreen ebonakalayo kunye ne-sunscreen yamakhemikhali.

I-sunscreen ebonakalayo

I-sunscreen ebonakalayo, njengoko igama lisitsho, isebenzisa imigaqo yefiziksi. Amasuntswana e-athomu ale sunscreen anemilo efana ne-flake. Xa esasazwa ebusweni, asebenza njengesipili, ebonakalisa ukukhanya kwelanga ukufezekisa injongo yokukhusela ilanga. I-Titanium dioxide kunye ne-zinc oxide zombini zizithako ze-sunscreen ebonakalayo. Zinokwenza ifilimu ekhuselayo eluswini ukuze imisebe ye-ultraviolet ingangeni kumphezulu wesikhumba. Zombini zinokubonelela ngokhuseleko olupheleleyo lwe-UVB, phakathi kwazo i-zinc oxide inokuthintela i-UVA ngcono. Izithako ze-sunscreen eziqhelekileyo zimhlophe kwaye zi-pasty, kwaye zijika zibe luhlaza okwesibhakabhaka xa zichatshazelwa ngamanzi. Nangona kunjalo, olu hlobo lwemveliso lukwanemida ethile: kubantu abanesikhumba esimnyama, isiphumo sokupholisha sisenokungabi sendalo; kubantu abanesikhumba esomileyo, asifumisi ngokwaneleyo; asifanelekanga kwi-sunscreen yomzimba wonke; iimveliso zokususa izimonyo kufuneka zisetyenziswe ukunceda ukuyisusa icocekile, njl.

i-sunscreen yekhemikhali

I-sunscreen yekhemikhali kukusebenzisa izithako zekhemikhali ukukhusela elangeni. Olu hlobo lwe-sunscreen lusebenzisa umgaqo wokufunxa ukukhusela elangeni. Yinto edlulisela ukukhanya enokufunxa imisebe ye-ultraviolet kwaye iyiguqule ibe ngamandla okungcangcazela kweemolekyuli okanye amandla obushushu ukuze kufezekiswe isiphumo sokukhuselwa lilanga, njengee-amino acids. I-Benzoic acid kunye nezinto eziphuma kuyo, i-cinnamic acid, njl. Xa isetyenziswa ebusweni, ii-athomu zifunxa ukukhanya kwelanga ukuze zithintele ukuba kungafikeleli eluswini. Ngokwethiyori, i-sunscreen yomzimba ingcono kune-sunscreen yekhemikhali, kodwa okwangoku uninzi lwazo ezithengiswayo zii-sunscreen zekhemikhali.

Amanyathelo okuzikhusela ekusebenziseni izithambiso zokukhusela ilanga

1. Indawo yokusetyenziswa

Xa ufaka i-sunscreen, ungayityesheli intamo yakho, isilevu, iindlebe kunye nezinye iindawo ukuze uphephe ibala lolusu elingalinganiyo.

2. Iimveliso zokucoca

Qiniseka ukuba ususa ngokupheleleyo i-sunscreen yonke imihla, ngoko ke ungaphumli uze ulale uyifakile.

3. Sebenzisa ubungakanani obaneleyo

I-sunscreen ayisebenzi ngokuyisebenzisa nje kuphela, kodwa kufuneka ifikelele kumlinganiselo othile ukuze isebenze. Ngokwesiqhelo, ubungakanani be-sunscreen esetyenziswa eluswini yi-2 mg ngesentimitha yesikwere ukuze kufezekiswe isiphumo esifunekayo sokukhusela ilanga. Kufuneka kuqatshelwe ukuba amaxabiso e-SPF awanakuqokelelwa. Ukusebenzisa iileya ezimbini ze-sunscreen ye-SPF10 kuya kuba nesiphumo sokukhusela kuphela somaleko omnye we-SPF10.

4. Musa ukuxuba izithambisi zelanga ezivela kwiimveliso ezahlukeneyo

Ukusetyenziswa okuxutyiweyo kunokunyusa amathuba okukruquka kwesikhumba. Izithako ze-sunscreen zeempawu ezahlukeneyo azingqinelani. Ukuba zixutyiwe kwaye zidibene eluswini, izithako zinokuphazamisana okanye zithintelene, zinciphise impembelelo ye-sunscreen, kwaye zibangele nee-allergies zesikhumba.

5. Nika ingqalelo ekulondolozeni imali

I-sunscreen isenokungasebenzi kakuhle xa ibekwe kubushushu okanye elangeni ixesha elide. Musa ukusebenzisa izinto zokuthambisa ze-sunscreen ezonakeleyo kuba ayinciphisi nje kuphela impembelelo ye-sunscreen kodwa ikwanokucaphukisa ulusu.

6. Nika ingqalelo kwiindawo ezingabonakaliyo zokukhusela ilanga

Xa usebenzisa isithambisi selanga esiqhelekileyo, kufuneka uqwalasele ulusu lwamehlo akho kunye nemilebe yakho. Nangona kunjalo, ukuba akukho myalelo, okanye ukuba usebenzisa iimveliso zesithambisi selanga emehlweni, musa ukuzisebenzisa kulusu olujikeleze amehlo.

Iintlobo ezahlukeneyo zolusu, iindlela ezahlukeneyo zokuthenga

Ehlotyeni, ubume besikhumba buya kutshintsha ngenxa yokwahluka kokukhupha ioyile. Ke ngoko, abantu kufuneka benze olunye uvavanyo oluchanekileyo lwesikhumba ngaphambi kokuba bathenge. Ulusu olunamafutha kufuneka lukhethe iimveliso zelanga ezisekelwe emanzini ezinokungena ngamandla; ulusu olomileyo kufuneka lukhethe iimveliso zelanga ezisekelwe kukhilimu; ngokubanzi akukho mithetho ingqongqo yolusu olungathathi cala, kwaye i-sunscreen yohlobo lwe-emulsion ifanelekile kuzo zonke iintlobo zesikhumba. Iintlobo zesikhumba ezahlukeneyo kufuneka zikhethe i-sunscreen ezahlukeneyo.

Ulusu olunamafutha:

Kuya kufuneka ukhethe i-sunscreen eyenziwe ngamanzi, engenawo amafutha, enamandla amakhulu okungena, ehlaziyayo kwaye engenamafutha ukuyisebenzisa kwaye ayivali iimbobo. Ungaze usebenzise i-sunscreen oil, kwaye sebenzisa iimveliso ze-sunscreen ngononophelo.

Ulusu olufana ne-acne:

Khetha i-sunscreen engenawo amafutha esekwe emanzini kwaye enamandla okugqobhoza. Xa i-acne inzima, kufuneka uyeke ukusebenzisa i-sunscreen, kwaye ungasebenzisa iindlela zomzimba zokufihla kuphela xa uphuma.

Ulusu olomileyo:

Abantu abanesikhumba esomileyo kufuneka bakhethe i-sunscreen efumisayo kwaye yongeza imiphumo yokufumisa kwaye iphucula ukhuseleko lolusu. Ii-sunscreen ezininzi zongeza imiphumo yokufumisa kunye ne-antioxidant ukongeza ekukhuseleni ilanga.

Ulusu olubuthathaka:

Kwisikhumba esibuthathaka, kuyacetyiswa ukuba ukhethe i-sunscreen eyenzelwe ngokukodwa ulusu olubuthathaka okanye i-sunscreen yomzimba.

I-SPF

Kule mihla, zonke iimveliso ze-sunscreen ziphawulwe ngokukodwa nge-SPF. I-SPF kunye namanani alandelayo abonisa into yokukhusela ilanga eveliswa yile mveliso. Abathengi banokuguqula ixabiso le-SPF le-sunscreen ekufuneka bazithengele bona. Uninzi lwabantu luya kujonga ixabiso le-SPF njengepharamitha ephambili ye-sunscreen. I-SPF sisifinyezo sesiNgesi se-SUN proteetion Factor. Oku kubonisa ukuba i-sunscreen inokuba phezulu okanye iphantsi kangakanani ekuthinteleni i-sunscreen. Ipharamitha ye-SPF: I-SPF=idosi encinci ye-erythema (emva kokusebenzisa iimveliso ze-sunscreen) )/idosi encinci ye-erythema (ngaphambi kokusebenzisa i-sunscreen).

Umzekelo, ukuba ulusu lwakho lune-erythema dose encinci yemizuzu eli-15, ukuba usebenzisa i-sunscreen ene-SPF 4, ngokwethiyori ungahlala elangeni ixesha elide ngokuphindwe kane, eliyimizuzu engama-60. Emva kwemizuzu engama-60, ulusu lwakho luya kuba bomvu. . Ukuba usebenzisa i-SPF8 sunscreen, ungahlala elangeni ixesha eli-8 eliyimizuzu eli-120, njalo njalo.

Ngokubanzi, xa i-SPF index iphezulu, kokukhona ukhuseleko lwayo luba lukhulu. Kwiimeko eziqhelekileyo, abantu abaneentlobo zolusu eziqhelekileyo kufuneka basebenzise izithambisi zelanga ezine-SPF 8 ukuya kwi-12; abo banesikhumba esikhanyayo kufuneka basebenzise i-SPF 30; abantu abane-photosensitivity kufuneka bakhethe izithambisi zelanga ezinexabiso le-SPF eliphakathi kwe-12 kunye ne-20. Abasebenzi baseofisini badibana nelanga kuphela xa besiya emsebenzini naxa bebuya emsebenzini, ngoko ke i-SPF kufuneka ibe ngaphantsi kwe-15. Kubakhenkethi ababandakanyeka kwimisebenzi yangaphandle, kucetyiswa ukuba basebenzise izithambisi zelanga ezine-SPF20 okanye ngaphezulu. Xa uzilolonga phantsi kwelanga elitshisayo kwi-plateau okanye uqubha elunxwemeni, kufuneka usebenzise izithambisi zelanga ze-SPF30. Kucetyiswa ukuba ukhethe iimveliso zokhathalelo lwesikhumba ezingangeni manzi xa uqubha ngaphandle, kodwa ngaphandle kokuqubha, iimveliso zokhathalelo lwesikhumba ezingangeni manzi kufuneka zisetyenziswe kancinci.

Amanyathelo okhuseleko xa uthenga

1. Uvavanyo lolusu

Kucetyiswa ukuba wenze uvavanyo oluchanekileyo lolusu ngaphambi kokuba uthenge i-sunscreen. Ulusu olunamafutha lufanele lukhethe i-sunscreen esekwe emanzini enendawo engene ngamandla; ulusu olomileyo lufanele lukhethe i-cream sunscreen; ulusu oluphakathi ngokubanzi alunazo iimfuno ezingqongqo, kwaye i-sunscreen yohlobo lwe-emulsion ifanelekile kuzo zonke iintlobo zolusu.

2. Bala ixabiso le-SPF

Ngokubanzi, xa i-SPF index iphezulu, ixesha lokukhusela liba lide.

3. Qonda amaqela afanelekileyo kwii-sunscreen ezahlukeneyo

Iimveliso ezahlukeneyo zokukhusela ilanga zifanelekile kubantu abahlukeneyo. Eyona ndlela ilungileyo kukuzizama ngaphakathi esihlahleni sakho ngaphambi kokuba uzithenge. Ukuba ulusu luba bomvu, ludumbe, lube buhlungu, okanye lurhawuzelele kwimizuzu eli-10, oko kuthetha ukuba une-allergy kwimveliso. Ungazama imveliso ene-SPF engaphantsi ngokuphindwe kabini kunale. Ukuba kusekho impendulo, kungcono ukuyeka olo hlobo lwe-sunscreen.

4. Uvavanyo lomgangatho wolusu

Ngenxa yokwahluka kokukhupha ioyile, umgangatho wolusu uya kutshintsha, ngoko ke kufuneka kwenziwe uvavanyo lomgangatho wolusu. Ulusu olunamafutha lufanele lukhethe izicoci zefoam ezinamandla okucoca kunye neemveliso zelanga ezisekelwe emanzini ezinokungena ngamandla; ulusu olomileyo lufanele lukhethe izicoci zobisi kunye neemveliso zelanga ezikhrimu; ulusu olungathathi cala lunoluhlu olubanzi lweendlela onokukhetha kuzo. Izicoci zelanga ezitshizwayo kunye nezitshizwayo zilungele zonke iintlobo zolusu.